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Environment-friendly clay stabilizer for oil well fracturing as well as preparation device and preparation method

A technology of clay stabilizer and preparation device, which is applied in the direction of chemical instruments and methods, drilling compositions, chemical/physical/physicochemical fixed reactors, etc., which can solve the problems of long stirring time and insufficient mixing, and achieve It is beneficial to oil production, fracturing effect improvement, and the effect of inhibiting formation clay expansion and clay particle migration

Active Publication Date: 2020-05-29
海兴县新源化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the stirring of the stirring blade is generally to disturb the mixing of the surrounding materials and liquids, and sufficient mixing requires not only the mixing of the surrounding materials and liquids, but also the mixing between the upper and lower materials. The existing mixing method makes the stirring time longer and the mixing insufficient

Method used

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  • Environment-friendly clay stabilizer for oil well fracturing as well as preparation device and preparation method
  • Environment-friendly clay stabilizer for oil well fracturing as well as preparation device and preparation method
  • Environment-friendly clay stabilizer for oil well fracturing as well as preparation device and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1 An environmentally friendly clay stabilizer for oil well fracturing

[0037] This example discloses an environment-friendly clay stabilizer for oil well fracturing, which comprises the following components in parts by weight: 20 parts of calcium chloride dihydrate, 8 parts of fatty alcohol, and 6 parts of alkyl polyoxyethylene ether , 12 parts of sodium dodecylbenzenesulfonate, 20 parts of methanol.

[0038] The clay stabilizer of this embodiment can effectively inhibit formation clay swelling and clay particle migration, which is beneficial to the oil production of oil wells; it is used for anti-swelling in acid fracturing and water injection projects, and it does not need drainage aids when configuring fracturing fluids It reduces the cost and facilitates the preparation of fracturing fluid, and the fracturing effect is significantly improved.

Embodiment 2

[0039] Example 2 A preparation device for an environmentally friendly clay stabilizer for oil well fracturing

[0040] This embodiment discloses a preparation device for an environmentally friendly clay stabilizer for oil well fracturing, such as figure 1 , figure 2Shown, including the reactor and stirring mechanism. Wherein, the reaction kettle includes a kettle body 1, the upper and lower ends of the kettle body 1 are detachably connected with an upper cover 2 and a lower cover 3 respectively, and a side cover 17 is detachably connected with the kettle body 1, and the side cover 17 is used for the kettle body 1 It is opened during internal inspection and regular maintenance, and a discharge pipe 15 is connected to the lower cover 3 . The stirring mechanism includes a driving motor 4, a stirring shaft 9 and a mixing drum 10, the driving motor 4 is installed on the upper cover 2, the output shaft 5 of the driving motor 4 extends vertically into the reactor, and the output s...

Embodiment 3

[0046] Example 3 A preparation method of an environmentally friendly clay stabilizer for oil well fracturing

[0047] This embodiment discloses a preparation method of an environmentally friendly clay stabilizer for oil well fracturing, and its specific steps are as follows:

[0048] S1. Add water to the reactor, turn on the driving motor to stir the reactor, and then add calcium chloride dihydrate;

[0049] After S2, 40min, add fatty alcohol;

[0050] After S3, 40min, add alkyl polyoxyethylene ether;

[0051] S4, increase the rotating speed of driving motor, add sodium dodecylbenzene sulfonate after 40min;

[0052] After S5, 40min, add methanol;

[0053] S6. Control the drive motor to rotate with frequency conversion. After 90 minutes, turn off the drive motor, let stand for 60 minutes, and discharge.

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Abstract

The invention discloses an environment-friendly clay stabilizer for oil well fracturing as well as a preparation method and special preparation equipment of the environment-friendly clay stabilizer. The clay stabilizer comprises the following components in parts by weight: 15-25 parts of calcium chloride dihydrate, 4-12 parts of a fatty alcohol, 2-10 parts of an alkyl polyoxyethylene ether, 4-12 parts of sodium dodecyl benzene sulfonate and 10-30 parts of methanol. The preparation method is realized on the basis of preparation equipment, a lower feed liquid and an upper feed liquid in a reaction kettle are mixed alternately, and a stirring mechanism is driven to rotate eccentrically, so that the stirring range is greatly widened. The preparation method has the characteristics of safety, and environmental friendliness; the mixing time can be saved, and full mixing can be realized by using the preparation equipment. The preparation method is suitable for the technical field of preparation of clay stabilizers.

Description

technical field [0001] The invention relates to an environment-friendly clay stabilizer for oil well fracturing, a preparation device and a preparation method. Background technique [0002] Clay stabilizers are chemical agents that can inhibit the expansion of formation clay and the migration of clay particles. It mainly includes cationic water-soluble polymers, such as cationic polyacrylamide and polyquaternary ammonium salts. The use of clay stabilizers is beneficial to the oil production of oil wells. In the preparation process, the mixing of the material and liquid is mostly made by stirring the reaction kettle through the stirring mechanism. The current stirring mechanism is a motor-driven stirring shaft, so that the stirring blades on the stirring shaft can mix the mixed liquid in the reaction kettle. However, the stirring of the stirring blade is generally to disturb the mixing of the surrounding materials and liquids, and sufficient mixing requires not only the mix...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/68C09K8/88B01J19/18
CPCB01J19/0066B01J19/18C09K8/68C09K8/885C09K2208/12
Inventor 张玉珍
Owner 海兴县新源化工有限公司
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